I would have to post a shopping list like Asia's, I think: anything wicked and naughty. Corsets and other clothing that're designed to please via discomfort are a huge turn on; the whole sacrificing for another's pleasure thing. I especially love items that lock into place (collars etc). One day my sub is so getting a chastity belt and she'll be very surprised *evil grin*. Force is always fun as well...a bit of pain, some screams, dragging and pushing a slave into place.

Oh, and recently I've discovered the sublime joy of having one's feet licked and kissed. The combination of erotic and sensual pleasure is amazing.